Whole grain and body weight changes in apparently healthy adults: a systematic review and meta-analysis of randomized controlled studies
Pol K, Christensen R, Bartels EM, Raben A, Tetens I, Kristensen M
The American journal of clinical nutrition · 112 citas
Cómo se estudió
- Diseño
- Metaanálisis (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
- Consumo medido con
- No se indica
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Strategiske Forskningsråd
Según 1 financiador declarado.
Publicación
- Publicado
- 2013-08-15 · Am J Clin Nutr · vol. 98 · número 4 · págs. 872–884
- Editorial
- Elsevier BV
- Citado
- 272 citas · más que el 92% de estudios similares · 2.7× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 72 trabajos
- Acceso
- Lectura gratuita
- Áreas de investigación
- Food composition and properties · Nutritional Studies and Diet · Lipoproteins and Cardiovascular Health
- Palabras clave
- whole grains, LDL cholesterol, total cholesterol, HDL cholesterol, triglycerides, serum lipids, whole grain oats, dietary fiber, cardiovascular disease prevention, body weight, healthy adults
- MeSH
- adipose tissue, humans, body weight, weight loss, body mass index, diet, body composition, research design, food handling, dietary fiber, adolescent, adult, aged, middle aged, female, male, adiposity, randomized controlled trials as topic, waist circumference, edible grain
6 autores
- Korrie Pol🇩🇰University of Copenhagen
- Robin Christensen🇩🇰Copenhagen University Hospital
- Else Marie Bartels🇩🇰University of Copenhagen
- Anne Raben🇩🇰University of Copenhagen
- Inge Tetens🇩🇰University of Copenhagen
- Mette Kristensen🇩🇰University of Copenhagen
Resumen
El texto original del estudio, en el idioma en que se publicó.
Background
Whole grains have received increased attention for their potential role in weight regulation. A high intake has been associated with smaller weight gain in prospective cohort studies, whereas the evidence from randomized controlled studies has been less consistent.
Objective
We assessed the effects of whole-grain compared with non-whole-grain foods on changes in body weight, percentage of body fat, and waist circumference by using a meta-analytic approach.
Design
We conducted a systematic literature search in selected databases. Studies were included in the review if they were randomized controlled studies of whole-grain compared with a non-whole-grain control in adults. A total of 2516 articles were screened for eligibility, and relevant data were extracted from 26 studies. Weighted mean differences were calculated, and a metaregression analysis was performed by using the whole-grain dose (g/d).
Results
Data from 2060 participants were included. Whole-grain intake did not show any effect on body weight (weighted difference: 0.06 kg; 95% CI: -0.09, 0.20 kg; P = 0.45), but a small effect on the percentage of body fat was seen (weighted difference: -0.48%; 95% CI: -0.95%, -0.01%; P = 0.04) compared with that for a control. An examination of the impact of daily whole-grain intake could predict differences between groups, but there was no significant association (β = -0.0013 kg × g/d; 95% CI: -0.011, 0.009 kg × g/d).
Conclusions
Whole-grain consumption does not decrease body weight compared with control consumption, but a small beneficial effect on body fat may be present. The relatively short duration of intervention studies (≤16 wk) may explain the lack of difference in body weight and fat. Discrepancies between studies may be caused by differences in study design.
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